Pipe-cutter



J. N. MARSO.

PIPE GUTTER.

(No Model.)

Patented Feb. 4, 1896.

K illllm ANDREW a GRANAM.PnoTo-umawAsHvlNGTOmv UNITED STATES PATENTOFFICE.

JOHN N. MARSO, OF JOLIET, ILLINOIS.

PIPE-CUTTER.

SPECIFICATION forming part of Letters Patent No. 554,028, dated February4, 1896.

Application filed November. 29, 1895. Serial No. 570,406. (No model.)

To all wwnt it may concern.'

Be it known that I, JOHN N. MARSO, a citizen of the United States ofAmerica, residing at Joliet, in the county of Will and State ofIllinois, have invented certain new and useful Improvements inPipe-Cutters, of which the following is a specification, reference beinghad therein to the accompanying drawings, and the letters of referencethereon, forming a part of this specification, in which- Figure lis aside elevation of the pipe-cutter as it would appear applied to a pipebeing cute Figs. 2 and 3 are detail Views of the devices for holding thepipe to the cutting-bit. Fig. 4. is a View of the pipe-cutter as itwould appear opened to be placed upon the pipe to be cut. Fig. 5 is adetail View showing the manner in which the cutting bit or tool isattached to its feed-screw; and Fig. G is a view on the lower end ofFig. l, looking into the chamber for holding the cutting bit or tool.

This invention relates to certain improvements in pipe-cutters, whichimprovements are fully set forth and explained in the followingspecification and claims.

Referring to the drawings, A represents the frame or body of the toolformed in two parts or halves hinged together at D on one side and whenclosed and secured together, by means of the nut and bolt G, are adaptedto encircle the pipe L to be cut, as shown in Fig. l.

Il is the bit which is arranged in a chamber in the body A, and isadapted to be forced into the side of the pipe L to be cut bymeans ofturning the screw I. The said bit is provided on its inner end with anannular groove R, as shown in Fig. 5, which grooved end enters a chamberin the end of the screwI, and is held ltherein by means of the pins Ppassing through said screw and groove, as shown in Fig. 5, by means ofwhich connection the said bit and screw are united in such manner thatthe said screw can be turned without turning the bit, which is seated ina square chamber, and so the bit can be turned around so the tool can beturned in the reverse direction.

The frame A is provided with the frictionwheels B and B/ for bearingagainst the pipe L. The wheels B are arranged on axles passing throughthe frame A, as shown particularly in Fig. 4, while the wheels B arearranged on an axle passing through the outer Aend of the sliding rod K,as shown in Figs. 1 and 3. Said rod is arranged so its inner end entersa chamber in the screw E, as shown in Fig. 2, and is provided with acoil-spring J sleeved thereon between the head of said rod and the endof said screw, so that when said screw is turned down it turns against awasher M on said rod which rests against said spring, the washer beingprevented from falling off said rod when it is withdrawn from itschamber by reason of the inner end of said rod being headed down, asshown at N, Fig. 2.

The axle of wheels B' is connected with the frame A by means of the twolinks C, arranged one upon either side of the tool, as shown in Fig. 4,in such manner that the wheels B may be moved to or from the pipe L bymeans of turning the screw E. The links O prevent lateral movement ofthe wheels B' and their axle, but permit them to be adjusted to or fromthe pipe to be cut, and said wheels are yieldingly held against the pipethrough the medium of said coil-spring,

which permits the said wheels to the more readily pass over lumps orobstructions that may be on the pipe.

The frame A is provided with barholes F for holding a bar V, (shown inbroken lines in Fig. 1,) by means of which bar the tool may be turnedaround the pipe L to be cut, and the tool may be turned in eitherdirection and cut the pipe by turning the bit in either direction. It isintended to have the tool made of any desired size to cut any size ofpipe.

In operation the tool or frame A is clamped around the pipe L and lockedby means of the bolt and nut G, as shown in Fig. l. The screw E is thenturned up'so as to cause the wheels B' to bear against said pipe and soit will be held firmly between rollers or wheels B and I3. The screw Iis then turned up so as to cause the bit H to engage the pipe L. Theframe A is then turned around the said pipe by means of the bar V,inserted in the bar-holesF successively as the tool is turned, causingthe bit to cut an annular channel or groove in the pipe until entirelysevered, the

IOO

bit-screw being,l turned up at each revolution of the tool to cause thebit to take a new cut.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is as follows:

l. In a pipe-cutter, the combination of the frame A formed in two partsand hinged together and having the nut and bolt G for locking the twoparts of said frame together on the pipe to be eut, and having thebarholes F, the bit II, screw I attached to said bit, the screw E havinga hollow inner end, the rod K having its inner end arranged in thechamber of screw E, eoilspringJ sleeved on said rod between its head andscrew E, friction-wheels B and their axle attached to rod K, links C forpivotally connectingI said wheels with frame A, and the frictionwheels iB and their axles all arranged to operate substantially as and for thepurpose set forth.

2. In a pipe-cutter the combination of the jointed frame A, and themeans for clamping it on a pipe to be cut, the adjustable bit Il, thefriction-wheels B, the hollow screw E, rod K fitting the hollow of saidscrew and having an axle attached to its outer end, the frictionwheels Bon said axle, the links C for pivotally connecting said wheels and theiraxle with the frame A, and the coil-spring sleeved on said rod betweenits head and screw E all arranged to operate substantialbr as and forthe purpose set forth.

JOI-IN N. MARSO.

"Witnesses:

THOS. H. IlUTeHINs, RAY MUTUI-HNS.

